# Not able to join session using Zoom Video SDK (iOS)

**URL:** <https://devforum.zoom.us/t/not-able-to-join-session-using-zoom-video-sdk-ios/59685>\
**Category:** iOS\
**Created:** [November 2, 2021, 1:24pm UTC](https://devforum.zoom.us/t/not-able-to-join-session-using-zoom-video-sdk-ios/59685 "2021-11-02T13:24:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ashwini10](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/ashwini10/32/17909_2.png) [@Ashwini10](https://devforum.zoom.us/u/Ashwini10)\
**Post date:** [November 2, 2021, 1:24pm UTC](https://devforum.zoom.us/t/not-able-to-join-session-using-zoom-video-sdk-ios/59685/1 "2021-11-02T13:24:39Z")

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Hi,

I am trying to run zoom video SDK on my device but getting errors :

**2021-11-02 16:51:09.008955+0530 ZoomVideoSample[12522:2195305] ErrorType========2003, Join session failed**

**2021-11-02 16:51:09.009219+0530 ZoomVideoSample[12522:2195305] ErrorDetails========16**

**2021-11-02 16:51:09.204470+0530 ZoomVideoSample[12522:2195305] ErrorType========2008, Disconnecting session…**

**2021-11-02 16:51:09.204531+0530 ZoomVideoSample[12522:2195305] ErrorDetails========0**

**2021-11-02 16:51:09.303641+0530 ZoomVideoSample[12522:2195305] onSessionLeave====\>**

Can you please guide?

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**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [November 2, 2021, 10:27pm UTC](https://devforum.zoom.us/t/not-able-to-join-session-using-zoom-video-sdk-ios/59685/2 "2021-11-02T22:27:13Z")

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Hey @Ashwini10,

Thanks for using the dev forum!

Normally this happens when the JWT is invalid. First, I would check out this tutorial on how to make a sample JWT: [https://devsupport.zoom.us/hc/en-us/articles/360059893552-How-to-create-a-sample-JWT-for-the-Client-SDK](https://devsupport.zoom.us/hc/en-us/articles/360059893552-How-to-create-a-sample-JWT-for-the-Client-SDK)

Please note, that this tutorial is technically for the meeting SDK but the steps are the same, you just need to make sure to use the payload for the video SDK which is here: [https://marketplace.zoom.us/docs/sdk/video/auth#payload](https://marketplace.zoom.us/docs/sdk/video/auth#payload)

Thanks!  
Michael

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [December 3, 2021, 8:28am UTC](https://devforum.zoom.us/t/not-able-to-join-session-using-zoom-video-sdk-ios/59685/3 "2021-12-03T08:28:00Z")

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Closed on December 3, 2021, 8:28am UTC

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